Flexible Janus nanofiber to acquire tuned and enhanced simultaneous magnetism-luminescence bifunctionality
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A novel nanostructure of [CoFe2O4/PVP]//[YAG:7 % Tb3+/PVP] magnetic-luminescent bifunctional Janus nanofibers has been successfully fabricated via electrospinning technology using a homemade parallel spinneret. Electrospun YAG:7 % Tb3+ luminescent nanofibers and CoFe2O4 magnetic nanofibers were respectively incorporated into polyvinyl pyrrolidone (PVP) matrix and electrospun into Janus nanofibers with CoFe2O4 magnetic nanofibers/PVP as one strand nanofiber and YAG:7 % Tb3+ luminescent nanofibers/PVP as another strand nanofiber. [CoFe2O4/PVP]//[YAG:7 % Tb3+/PVP] magnetic-luminescent bifunctional Janus nanofibers possess superior magnetic and luminescent properties due to their peculiar nanostructure, and the luminescent characteristics and saturation magnetizations of the Janus nanofibers can be tuned by adding various amounts of YAG:7 % Tb3+ luminescent nanofibers and CoFe2O4 magnetic nanofibers. Compared with CoFe2O4/YAG:7 % Tb3+/PVP composite nanofibers, the magnetic-luminescent bifunctional Janus nanofibers provide higher performances due to isolating YAG:7 %Tb3+ luminescent nanofibers from CoFe2O4 magnetic nanofibers. Formation mechanism of [CoFe2O4/PVP]//[YAG:7 % Tb3+/PVP] Janus nanofibers is also presented. The design conception and construction technology are of universal significance to fabricate other bifunctional Janus nanofibers.
KeywordsCoFe2O4 Composite Nanofibers MnFe2O4 Exciting Light Rare Earth Compound
This work was financially supported by the National Natural Science Foundation of China (NSFC 50972020, 51072026), Specialized Research Fund for the Doctoral Program of Higher Education (20102216110002, 20112216120003), the Science and Technology Development Planning Project of Jilin Province (Grant Nos. 20130101001JC, 20070402), the Science and Technology Research Project of the Education Department of Jilin Province during the eleventh five-year plan period (Under Grant No. 2010JYT01).
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